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Fortinet FortiOS vs OPNsense comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Sep 16, 2024

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Fortinet FortiGate
Sponsored
Ranking in Firewalls
2nd
Average Rating
8.4
Reviews Sentiment
7.2
Number of Reviews
317
Ranking in other categories
Software Defined WAN (SD-WAN) Solutions (1st), WAN Edge (1st)
Fortinet FortiOS
Ranking in Firewalls
28th
Average Rating
8.4
Reviews Sentiment
8.4
Number of Reviews
76
Ranking in other categories
No ranking in other categories
OPNsense
Ranking in Firewalls
3rd
Average Rating
8.2
Reviews Sentiment
7.2
Number of Reviews
39
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of January 2025, in the Firewalls category, the mindshare of Fortinet FortiGate is 20.3%, up from 17.4% compared to the previous year. The mindshare of Fortinet FortiOS is 0.9%, down from 1.0% compared to the previous year. The mindshare of OPNsense is 14.5%, down from 18.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Firewalls
 

Featured Reviews

EhabAli - PeerSpot reviewer
Efficient, user-friendly, and affordable
In the past, NSS Labs was utilized to test files and verify the numbers and datasheets. It would be beneficial to have an organization or testing lab that can verify the numbers in our datasheets since changes are frequently made, which can be inconvenient for review. For instance, when comparing different competitors such as Forcepoint, Palo Alto, and Check Point, the throughput or numbers in the datasheet may be lower than the actual numbers. Conversely, Fortinet typically reports very high numbers, but they cannot be replicated in the real world. Therefore, it would be advantageous for them to partner with a neutral testing organization such as NSS Labs to validate these numbers, thus providing more credibility and comfort to everyone regarding the accuracy of the datasheets. For the migration, everyone has a firewall in use and I am selling Fortinet. Typically, I am replacing another firewall. Previously, there was a tool available to convert configurations from one firewall, such as Palo Alto, to Fortinet, but this tool is no longer free. If it could be made free again, it would be very beneficial. This tool shows a lot of promise and is very good. Making it free would help many companies deliver their products in a more efficient and integrated way. It would also be more valuable to include the tool with the firewall package or license instead of having to pay extra for it. Paying extra puts more pressure on small companies to deliver the firewall and complete the configuration, especially if they have hundreds or thousands of policies. It's very painful to move through these policies line by line. The stability has room for improvement. When it comes to Secure SD-WAN, everything is fine. They are going the right way. SD-WAN is very promising. They can provide the SD-WAN solution separately, but they will not take this approach because even the smallest firewall can support the features, so there is no need to have a separate service or appliance. They are following the right steps, and there is nothing to be improved. Feature-wise, I'm really satisfied with the new release, and the features they have added. For now, it's fine.
RaynoPowell - PeerSpot reviewer
Great IPS and DNS filtering with useful tutorials available  
We don't really find a lot of issues on it. If I really have to complain about something, and there's not much, is the free VPN solution is a bit limited. Then again, it is a free solution. That's essentially it. Nothing else on the FortiGate or on the Fortinet OS side is really an issue. That's one of the main reasons why we use them: everything works and works well. For what we use, there isn't really any missing feature. In fact, we actually want to get rid of some of the features that they have due to the fact that, for the security model that we need to implement, having more features actually opens up potential risk. We actually would like to have a device that is more focused specifically on OT environments the operational technologies. We would prefer a device that's stripped down, that doesn't have all the other fluff in the more enterprise system. We actually want a feature where we can remove features that are there that we don't use. That is actually a thing that we find. We use it now in an operational technology environment. We use normal IT equipment. However, it's not a normal IT network. It differs significantly from a normal corporate IT environment. In a normal corporate IT environment, you like the fluff, and the additional features, and you can click, click, click, and you're done. However, all of those features you add to a device open up risk for us. And that is something we do differently in the OT environment in operational technology. We prefer to not have the fluff. We prefer to have only what is needed for the device to do what it needs to do. For example, imagine an additional feature for some sort of additional VPN technology has been added. However, it's not really needed for the OT environment, and it's not configured on the device, yet there's some sort of security threat in there. Now, all of a sudden, somebody can hack your system, and he's in there, and he's switching the lights on and off the entire city. And you don't know about it due to the fact that the additional fluff that we added to the system, we weren't aware of that issue was on there. You can enable and disable certain modules in it. However, with disabling, nobody can really tell us if that module is disabled. Is it really disabled? Is it actually unloaded? Is it uninstalling Word from your laptop, or is it just not running Word?
Eddy Ramirez - PeerSpot reviewer
Good interface and firewall capabilities and overall easy to use
The security has improved as we can isolate the network. We can do attrition prevention via a tool that comes with the solution. We can have a VPN solution in place for those that work from home, outside the network, in a secure manner. We also like that it offers good authentication. It offers radius-based authentication, which has been useful for the company. The main platform is under the Open VPN firewall. The solution has high availability. When we have different ISPs, we can actually load balance those links or actually put some priority or even classify the traffic that might go into one ISP or another.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"Fortinet FortiGate's reliability is valuable."
"The initial setup is straightforward."
"The most valuable features are SD-WAN, application control, IPS control, and FortiSandbox."
"This is an easy solution to deploy."
"Good anti-malware and web filtering features."
"It is very flexible to use."
"Security solution with a straightforward and quick setup. It's a stable and scalable product."
"The features that prevent internet connections, the filtering are the most valuable because we did not have any internet protection before."
"The technical support on offer has always been quite good."
"I have found the most valuable feature of Fortinet FortiOS is the low maintenance."
"The main features I find useful are intrusion prevention and web filtering. Additionally, the solution is easy to manage."
"FortiOS' most valuable features are management, security, and easy updates with no downtime."
"It has a lot of scalability abilities which makes it easy to scale."
"A good network security system for medium-sized businesses with an excellent GUI interface that gives a graphic view of network status."
"The fact that is it has a UTM, a Unified Threat Management feature is the most valuable aspect for us. It's an all in one product. It's like our one-stop-shop to the internet."
"Compared to other firewalls, the segmentation is much easier in FortiGate."
"The solution has high availability."
"The interface and the dashboard are the most valuable features of this solution."
"The VPN server feature is the most valuable. It is integrated with Radius and AAA for doing accounting and authentication. Insight view is also an important feature for me at this time. It allows me to assess our network traffic. I also like the firewall feature. The BSD kernel has a packet filter. It is one of the most solid frameworks for firewalls. Its user interface is one of the best interfaces I have used."
"It has an open license. It works very well, and there is an update every month."
"URL blocking, Wireguard, Tail Scale, Engine Blocker, and VPN are the most valuable features for me."
"OPNsense could improve by making the configuration more web-based rather than shell or command-line-based."
"We have found pretty much all the features of the solution to be valuable."
"I find the solution to be user-friendly. It has a lot of reports and easy settings."
 

Cons

"This product needs to have an analysis feature, rather than having the analysis done through the integration of a different product."
"Compared to some other products, the DLP is not at par for the moment."
"In the next release, I would like to see the interface simplified to be more user-friendly."
"From a reporting perspective, there's room for improvement. They're providing FortiAnalyzer through which one can get some enhancements, but the visibility and reporting still need slight improvement."
"In the balance between links feature normally you can just choose one option to balance. It would be better for the solution to have more than one option, preferably three."
"The support costs and licensing are sometimes so expensive."
"It can be a little bit more user-friendly in terms of policy definition and implementation. It seems a little bit complicated, and it could be simplified."
"The pricing could be a bit better, especially when you consider how they have the most basic offering priced."
"The report and policy optimization tools can be improved in the next release."
"Fortinet FortiOS's integration could be improved."
"The implementation could be simplified."
"For me, it is important to be able to block VPN applications, like Facebook, so I would like to see that included in the next release. With this version, if you want to block or allow a site, you now have to drag all the domains related to this site."
"Fortinet FortiOS can improve the monitoring function, it could be more accurate, easy to use, and understandable."
"The central management can improve in Fortinet FortiOS. It is sometimes difficult to manage all the devices."
"Fortinet FortiOS can improve the GUI and remove the command line interface. All the functionality should be available from the GUI. Day-to-day management can be tough for IT administrators. Additionally, the reporting is not very good."
"The pricing model makes this product far more expensive than similar solutions."
"There should be more technical documentation."
"Its interface should be a little bit better."
"The ability to set the VPN IP address would be a welcome addition."
"You will need additional training before you can actually start to use it."
"They should improve IPEs for security in the future."
"The solution could be more secure."
"The only thing that I would like to see improved is the Insight or the NetFlow analysis part. It would be good to have the possibility to dig down on the Insight platform. Right now, we can easily do only a few analyses. If this page becomes more powerful, it surely will be a well-adopted platform."
"The interface isn't so friendly user. But we have some technicians here who are quite confident with this tool. OPNSense could maybe add sets of rules so it's simpler to manage different groups with particular needs."
 

Pricing and Cost Advice

"The price of FortiGate support is too expensive."
"FortiGate's pricing falls within the mid-range when compared to other leading firewall solutions."
"The pricing depends on the FortiGate model we are using, ranging from $3,000 to $20,000 US dollars."
"For our organization, the licensing costs are approximately $7,000 per year."
"Setup costs and pricing depends on many variables, but it's mostly affordable."
"If you purchase a one-year subscription with the hardware and then you want to renew for the second year, it is very costly."
"I give the pricing a nine out of ten."
"It was worth the money overall. It's good value."
"There is a license required for the solution and the price is fair."
"FortiOS is affordable, but its price could be lower."
"The Fortinet solutions can be a bit expensive."
"The solution is quite affordable and I rate the cost a four out of ten."
"The program is expensive."
"The solution could have a better licensing model. It's a bit more expensive than other solutions. The annual subscription is very pricy in Fortinet. The cost could be reduced."
"The support contracts are usually about $100 - $200 a device."
"A yearly subscription might be around $20,000 to $30,000."
"The solution is not expensive."
"OPNsense is a well known open-source tool."
"The price of OPNsense is good."
"Its pricing is unbeatable in comparison to other firewalls. You can have a small instance that could be €80 a month with the hardware underneath. Azure Firewall and FortiGate are out of the question at this price. If you are on a public cloud, you need the underlying infrastructure. Other than that, there is no additional cost. If you have it on-prem, you have to buy the server or the appliance. The hardware cost is replaced with the infrastructure cost in the cloud. You also have costs for the public IPs and underlying VMs, but that's not related to OPNsense. It would be the same for a FortiGate deployment on Azure. You need a FortiGate license, and you need the underlying infrastructure that scales up depending on your needs."
"We are using the paid version."
"It is free."
"OPNsense is open source software so at this time it is free for us to use."
"It is a free solution, and when you compare it to alternatives like FortiGate, which is quite powerful but also costly, the value becomes evident."
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Top Industries

By visitors reading reviews
Educational Organization
22%
Computer Software Company
14%
Comms Service Provider
6%
Manufacturing Company
6%
Computer Software Company
18%
Financial Services Firm
9%
Manufacturing Company
8%
Government
8%
Computer Software Company
16%
Comms Service Provider
11%
Government
8%
Educational Organization
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

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In the best tradition of these questions, Feature-wise both are quite similar, but each has things it's better at, it...
What do you like most about Fortinet FortiOS?
The SSL VPN is fee for use is most attractive.
What is your experience regarding pricing and costs for Fortinet FortiOS?
Regarding the cost, the initial purchase is relatively cheap because it comes bundled. However, the subscription rene...
What is the difference between PfSense and OPNsense?
Two of the most common and well recognized firewalls, PfSense and OPNsense both support site-to-site IPsec VPN and cl...
What do you like most about OPNsense?
What I like the most about OPNsense is that it offers an easy-to-use dashboard for device management and control.
What is your experience regarding pricing and costs for OPNsense?
I consider the pricing of OPNsense to be high when compared with other market products. However, as a free firewall p...
 

Also Known As

FortiGate 60b, FortiGate 60c, FortiGate 80c, FortiGate 50b, FortiGate 200b, FortiGate 110c, FortiGate, Fortinet Firewall
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Learn More

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Overview

 

Sample Customers

Amazon Web Services, Microsoft, IBM, Cisco, Dell, HP, Oracle, Verizon, AT&T, T-Mobile, Sprint, Vodafone, Orange, BT Group, Telstra, Deutsche Telekom, Comcast, Time Warner Cable, CenturyLink, NTT Communications, Tata Communications, SoftBank, China Mobile, Singtel, Telus, Rogers Communications, Bell Canada, Telkom Indonesia, Telkom South Africa, Telmex, Telia Company, Telkom Kenya
Black Gold Regional Schools, Amadeus Hospitality, Jefferson County, Chunghwa Telecom, City of Boroondara, Dimension Data
1. Deciso B.V. 2. iXsystems, Inc.  3. EuroBSDCon  4. Netgate  5. Claranet  6. Voleatech  7. Open Systems AG  8. Securebit AG  9. Proxmox Server Solutions GmbH  10. AVM Computersysteme Vertriebs GmbH  Additional customers include: T-Systems International GmbH, Deutsche Telekom AG, Vodafone GmbH, 1&1 IONOS SE, OVHcloud, Hetzner Online GmbH, Strato AG, PlusServer GmbH, Host Europe GmbH, United Internet AG, 1&1 Versatel Deutschland GmbH, QSC AG, Bechtle AG, Cancom SE, Computacenter AG & Co. oHG, T-Systems Multimedia Solutions GmbH, Atos SE, Capgemini SE, Accenture plc, IBM Corporation, Hewlett Packard Enterprise Company, Cisco Systems, Inc.
Find out what your peers are saying about Fortinet FortiOS vs. OPNsense and other solutions. Updated: January 2025.
831,158 professionals have used our research since 2012.